Welcome to EcoCAT!

Welcome to the IDNR Ecological Compliance Assessment Tool (EcoCAT) Public Website. EcoCAT is designed to assist applicants requesting a site review from the Illinois Department of Natural Resources Division of Ecosystems and Environment.

EcoCAT’s Public Website and Map Tool may allow your requests to be submitted and processed automatically by EcoCAT, or you may be informed that a more detailed review will be needed for your site, and that you will be recontacted by IDNR with the results.

The Division of Ecosystems and Environment typically must respond to each review request within 30 days.  If additional information is requested and supplied, the Division of Ecosystems and Environment must respond again within 60 days.  If there are still open issues, the Division of Ecosystems and Environment will work closely with you to resolve them.

For further information, please click on the following links:

Working with EcoCAT

How EcoCAT Works

Starting EcoCAT

EcoCAT Top Navigation Buttons

Drawing the Site Boundaries

Entering Data in EcoCAT